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are harmless, in fact, many are good for us. >> if you're in an environment where it is too clean you could get the next infection that comes along. >> give me a deep breath. >> reporter: the doctor says our super clean life-style could be partly to blame for the rise in the number of people with allergies and asthma. >> i view the immune system as an army, and if it doesn't have anything to fight, in many cases it will fight allergens. >> dogs, cats, trees. >> reporter: she has allergies, as well as three of her friends at school. >> we can't be like a normal kid. >> reporter: recent studies give new weight to the decades-old theory that some germs help our systems, between the harmful and harmless irritants. these findings of this population shows that kids raised on cow farms had reduced risk of allergies. the findings follow a previous study in europe >> there is a link between the farming community having less of a link between the allergies, and the kids having less of them as they grow up. >> reporter: the experts say the alcohol-based sanitizers do have a place in our lives. in hospital
resident security officer eric nordstrom, these incidents paint a clear picture that the environment in libya was fragile at best and could degrade quickly. tonight four republican senators led by john mccain are demanding answers from the cia director and other top intelligence officials in what is becoming an explosive campaign issue. the state department denies it rejected requests for more security, but says house republicans cut $300 million from their security budget. tonight four weeks after the attack, the department gave its first blow by blow account of what was clearly a well organized assault, never a spontaneous demonstration as officials first claimed. brian? >> hearings tomorrow. andrea mitchell with our story. thanks. >>> from pakistan tonight a truly shocking story of brutality against a 14-year-old girl targeted for assassination by the taliban because she dared to stand up and speak out. the world is just now learning about this. and reacting to it in horror. we get our report tonight from our nbc news pakistan based correspondent amna nawaz. >> reporter: she's kno
Search Results 0 to 5 of about 6 (some duplicates have been removed)

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